JP2002326915A - Curled hair corrective - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curled hair corrective having such excellent touch feeling as to impart the hair after treated therewith with smoothness, ductility and gloss without impairing straight-perming effect, and capable of sustaining high perming effect and diminishing hair damage. SOLUTION: This curled hair corrective is characterized by comprising a quaternary ammonium salt, a higher alcohol and an aqueous emulsion of a polymeric silicone of the general formula (I) (wherein, R1 is methyl or part of R1 s may each be phenyl; R2 is methyl or OH; and n is an integer of 500-3,000).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a hair straightening agent,
More specifically, it is suitable for hair straightening such as a cold two-bath type, a heated two-bath straight perm used for hair, a cold two-bath type using a hairdressing iron, and a heated two-bath straight perm. It relates to a hair straightener.

[0002]

2. Description of the Related Art A permanent waving agent comprises a first agent mainly containing a reducing agent and an alkaline agent and a second agent mainly containing an oxidizing agent. Comb street, suppleness,
Many attempts have been made to improve the feel such as moistness and the appearance such as gloss. In particular, from the viewpoint that hair becomes dry and loses smoothness after perm or straight perm treatment, permanent wave agents and hair straighteners having a hair conditioning effect to impart smoothness and moistness are desired. It is rare.

Conventionally, for the purpose of providing such an effect,
A quaternary ammonium salt is blended in many permanent wave preparations, and the quaternary ammonium salt is adsorbed on the hair to impart smoothness to the hair after the permanent and straight perm treatment. For example, many techniques have been proposed in which a quaternary ammonium salt, a higher alcohol, and an oil component are blended at a specific ratio (Japanese Patent Publication No. 2784346).

[0004]

However, the conventional permanent waving agent or hair straightening agent can impart smoothness but has a sticky surface, a heavy finish, no luster, and a continuous perm effect. There were problems to be improved, such as the properties. In addition, when the hair is straightened using a comb, particularly after treatment with the first agent of the hair straightening agent, the hair swells and is weakened in strength. Often the hair was damaged.

[0005] Under such circumstances, the present invention has an excellent feeling that it can impart smoothness, suppleness, and luster to the treated hair without impairing the effect of the straight perm, and maintains a high perm effect. And a hair straightener for reducing hair damage.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies in view of the above circumstances, and as a result, a hair straightening agent comprising a quaternary ammonium salt, a higher alcohol and an aqueous emulsion of a specific high molecular silicone has been obtained. In straight perm, hair can be given smoothness, suppleness and luster, and there is no hindrance to the straight perm effect.
The present inventors have found that the durability of the straight perm effect can be enhanced, and that hair damage such as cut hair due to perm treatment can be prevented, and the present invention has been completed.

That is, the present invention provides a hair straightening agent comprising a quaternary ammonium salt, a higher alcohol and an aqueous emulsion of a high molecular silicone represented by the following general formula (I). To provide.

[0008]

Embedded image

(In the above formula, R ₁ may represent a methyl group or a part thereof may represent a phenyl group, R ₂ represents a methyl group or a hydroxyl group, and n is an integer of 500 to 3,000. Represent)

[0010] Further, the present invention relates to a method for producing
The present invention provides the hair straightening agent, which is adjusted to a range of 1,000 to 50,000 mPa · s and is in the form of an emulsion or cream.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

The quaternary ammonium salt used in the present invention is
The following general formula (II)

[0013]

Embedded image

(Wherein one or two of R _{3 to} R ₆ are an alkyl group or an alkenyl group having 8 to 24 carbon atoms,
Represents a hydroxyalkyl group or a hydroxyalkenyl group, and the remainder represents an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group or a benzyl group, and X represents a halogen atom or an alkylsulfuric group having 1 to 3 carbon atoms. In the formula (II), any one or two of R _{3 to} R ₆ of the alkyl group having 8 to 24 carbon atoms is, for example, a cetyl group, a stearyl group, a behenyl group, a 12-hydroxystearyl group or the like. And an alkyl group having 16 to 22 carbon atoms is preferable, and particularly preferable examples include a stearyl group and a behenyl group. Preferred examples of the remaining alkyl group, hydroxyalkyl group or benzyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, a propyl group, a hydroxymethyl group and a hydroxyethyl group. X is a halogen atom or an alkyl sulfate, preferably a chlorine atom, a bromine atom, methyl sulfate and ethyl sulfate.

The quaternary ammonium salt represented by the general formula (II) includes, for example, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride,
Behenyltrimethylammonium chloride, behenyldimethylhydroxyethylammonium chloride, stearyldimethylbenzylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, cetyltrimethylammonium bromide, alkyltrimethylammonium bromide and cetyltriethylammonium methyl sulfate be able to. Among them, in particular, stearyltrimethylammonium chloride,
Cetyltrimethylammonium chloride, distearyldimethylammonium chloride, stearyldimethylbenzylammonium chloride and mixtures thereof are preferred.

These quaternary ammonium salts can be used alone or as a mixture of two or more. The content of these quaternary ammonium salts in the hair straightening agent is preferably 0.1%.
It is in the range of 2 to 5.0% by mass (hereinafter simply referred to as%), and more preferably in the range of 1.0 to 3.0%. When the content of the quaternary ammonium salt in the hair straightener is less than 0.2%, the effect of preventing smoothness and preventing hair damage may not be sufficiently exerted. If the salt content exceeds 5%, the smoothness, suppleness, and moistness of the hair almost reach the upper limit, which is not economical and may cause inconvenience in feel and maintain the stability of the composition. It may be difficult and not preferable.

The higher alcohol used in the present invention is a higher alcohol having a long-chain alkyl group having 14 to 24 carbon atoms. Preferred are long chain higher alcohols having 16 to 22 carbon atoms, such as cetyl alcohol, stearyl alcohol, behenyl alcohol, and other aliphatic alcohols.

One or more of the above-mentioned higher alcohols are appropriately selected and blended, and the blending amount is preferably 1.0 to 20.0%, more preferably 2 to 2%, based on the total amount of the hair straightener. 0.0 to 10.0%. If it is less than 1.0%, the smoothness, suppleness and moistness of the hair may be reduced, and if it exceeds 20.0%, the smoothness, suppleness and moistness of the hair may be reduced. The upper limit is not reached, it is not economical, and the viscosity of the composition may be too high to impede penetration into the hair, which is not preferred.

The aqueous emulsion of the high molecular silicone used in the present invention is an oil-in-water emulsion obtained by emulsifying a silicone polymer represented by the following general formula (I) in water.

[0020]

Embedded image

(In the above formula, R ₁ may represent a methyl group or a part thereof may represent a phenyl group, R ₂ represents a methyl group or a hydroxyl group, and n is an integer of 500 to 3,000. Represent)

As the above-mentioned high molecular silicone increases, the fluidity decreases and the viscosity increases as n increases. When an aqueous emulsion is formed, a low-viscosity liquid dimethylpolysiloxane (dimethylpolysiloxane having a viscosity of 200 mPa · s or less) is used. Siloxane), decamethylpentasiloxane, light isoparaffin, light liquid isoparaffin, and the like, and provided as an emulsion.

Examples of the surfactant for emulsifying the high-molecular silicone in water include anionic surfactants, cationic surfactants and nonionic surfactants. Agents and nonionic surfactants are preferred, with nonionic surfactants being particularly preferred. In the aqueous emulsion, the amount of the surfactant is not particularly important as long as the polymer silicone is kept in an emulsified state after being mixed with other components in the hair straightener. Generally, it is about 2-50%, preferably about 5-30%, of the silicone oil, including the polymeric silicone.

The particle size of the aqueous emulsion of the high molecular silicone is preferably from 0.1 to 100 μm, more preferably from 1.0 to 50 μm.
If the thickness is less than 0.1 μm, the smoothness and suppleness of the hair may be reduced and the effect of the present invention may not be exhibited, and if it is more than 100 μm, when incorporated into the present composition,
In some cases, the stability is poor, the emulsion is disintegrated, and the high-molecular silicone inhibits the hair straightening effect, which is not preferable.

Specific examples of the aqueous emulsion of the high molecular silicone used in the present invention include BY22-019,
BY22-020, BY22-034, BY22-05
5 and BY22 series such as BY22-060 (Toray
Dow Corning Silicone), FZ-4144,
FZ-4150, FZ-4158, FZ-4170, F
Silicon FZ-4 such as Z-4185 and FZ-4188
00 Series (manufactured by Nippon Unicar), XS65-B58
XS65 series such as 91, XS65-B7116 (G
E Toshiba Silicone Co., Ltd.).

The content of the aqueous emulsion of the high molecular silicone is preferably 0.1 to 5.0%, more preferably 0.2 to 3.0%, based on the total amount of the hair straightening agent. It is blended so that If the content of the high-molecular silicone is less than 0.1%, the smoothness of the hair may be reduced, and if it exceeds 5.0%,
In some cases, inconvenience may occur on the touch and it may be difficult to maintain the stability of the composition, which is not preferable.

The hair straightening agent of the present invention has a viscosity of from 1,000 to 50,000 mPa · s at 20 ° C. from the viewpoint of hair straightening effect and ease of application to hair in terms of usability.
It is preferable to make an emulsion or cream which is adjusted to the range of s. Further, more preferably, 3,000 to 30,
Emulsion or cream adjusted to the range of 000 mPa · s. If the viscosity is less than 1,000 mPas, the penetration into the hair is high and the reducibility is high, but since the adhesive force between the hairs is weakened, the hair may be damaged, but the curly hair straightening effect may be inferior, On the other hand, if it exceeds 50,000 mPa · s, the curly hair straightening agent becomes less firm when applied to the hair, and the agent cannot penetrate the hair sufficiently, resulting in a very poor hair straightening effect. There is not preferred.

The hair straightening agent of the present invention is particularly preferably used for a straight permanent, and is usually used as a first hair straightening agent containing a reducing agent. Examples of the reducing agent include thioglycolic acid, thiolactic acid, thiopropionic acid and salts thereof, cysteine, cysteine hydrochloride, N-acetylcysteine, sulfite, bisulfite and the like. Among the,
Thioglycolic acid, cysteine, cysteine hydrochloride are preferred. Usually, the compounding amount of the reducing agent is preferably 0.1 to 20.0%, more preferably 2.0 to 12.0%, based on the total amount of the hair straightening agent.

The hair straightening agent of the present invention may further comprise, in addition to the above-mentioned components, any of the components usually used in hair cosmetics, as long as the effects of the present invention are not affected. It is possible to mix. Illustrative optional ingredients include, for example, humectants (eg, propylene glycol,
Dipropylene glycol, glycerin, etc.), water-soluble polymer compounds (eg, methyl cellulose, hydroxyethyl cellulose, etc.), cationic polymer compounds (eg,
Cationic cellulose, copolymer of methacryloxyethyltrimethylammonium salt and polyvinylpyrrolidone, etc.), water-soluble silicone, nonionic surfactant (eg, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, etc.), amphoteric interface Activator (for example,
2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, trialkylaminoacetate betaine, etc., penetrants (e.g., urea, alkyl urea, benzyl alcohol, monoethylene oxide benzyl ether, etc.), animals and plants Natural extracts, amino acids, organic acids (eg, citric acid, lactic acid, etc.), inorganic salts (eg, sodium chloride, potassium chloride, etc.), fragrances, preservatives (eg, parabens, etc.), sequestering agents (eg, ethylene chloride) Disodium amine tetraacetate), ultraviolet absorbers (eg, oxybenzone, etc.), dyes and the like.

The hair straightening agent of the present invention comprises a cold two-bath type
Any treatment, such as using a heated two-bath method, a two-bath heating preparation, a cold or heated two-bath hair straightener, or a cold or heated two-bath hair straightener using a hair straightening iron It is also useful in the law.

[0031]

EXAMPLES Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. Prior to the examples, test methods and evaluation methods employed in each example will be described. In addition, the fragrance used below is as follows.

[0032]

[Table 1]

(Test method, evaluation method) A hair bundle (length 2) composed of healthy hair of a Japanese woman who has never been subjected to chemical treatment
(0 cm, weight 10 g) was shampooed using a 0.5% sodium lauryl sulfate solution at 40 to 50 ° C. Next, a hair straightening treatment was performed using the hair straightener of the present invention according to a conventional method. That is, the first agent having the same mass as the hair bundle is applied and blended, stretched while combing, and then left at room temperature for 10 minutes. Then rinse with running water,
Towel drying was performed. Next, a second agent of the following formulation having the same mass as that of the hair bundle was applied, and the mixture was blended while being combed through. Then, the mixture was allowed to stand at room temperature for 20 minutes, rinsed with running water, and dried.
Five professional beauty technicians score the following items on the feeling of the hair bundle after finishing for the items of smoothness, suppleness, luster, straightening effect, and no damage to the hair, and the evaluation results of each person Was calculated. Next, the treated hair is washed with a shampoo having the same mass as the hair bundle for 5 minutes while rubbing and washing, dried with a towel, and then dried at room temperature for 24 hours. After repeating this shampooing and drying process 10 times, 5 professional beauty technicians similarly score the permanence of the straight perm at the following evaluation points, and obtain the average value of the evaluation results of each person Was.

<Evaluation points> 5 points: very good 4 points: good 3 points: normal 2 points: bad 1 point: very bad

<Evaluation Criteria> ：: Average value of evaluation results is 4 or more ○: Average value of evaluation results is 3 or more and less than 4 Δ: Average value of evaluation results is 2 or more and less than 3 ×: Average value of evaluation results is 2 Less than

(Second hair straightening agent) A second hair straightening agent having the following composition was prepared by a conventional method. Sodium bromate 9.0 Propylene glycol 1.0 Stearyl trimethyl ammonium chloride 2.0 Polyoxyethylene (5.5) cetyl ether 3.0 Cetanol 5.0 Purified water Balance Total 100%

Examples 1 to 5 and Comparative Examples 1 to 3 The first hair straightening agent having the composition shown in Table 2 was prepared by a conventional method, and the finished hair bundle was evaluated for smoothness, flexibility, and gloss. , Straightening effect, no damage to hair, and straight permanent holding power were evaluated. The results are shown in Table 2.

[0038]

[Table 2]

As a result, the hair straighteners of Examples 1 to 5
It was excellent and good in all of the items of smoothness, suppleness, gloss, straightening effect, no damage to hair, and straight permanent holding power.

Examples 6 to 9 and Comparative Examples 4 to 9 A first hair straightening agent having the composition shown in Table 3 was prepared by a conventional method, and the finished hair bundle was evaluated for smoothness, flexibility, and gloss. , Straightening effect, no damage to hair, and straight permanent holding power were evaluated. Table 3 also shows the results.

[0041]

[Table 3]

As a result, the hair straighteners of Examples 6 to 9
It was excellent and good in all of the items of smoothness, suppleness, gloss, straightening effect, no damage to hair, and straight permanent holding power.

Example 10 A hair straightener having the following composition was prepared, and the feel of the hair bundle after finishing was evaluated for smoothness, suppleness, luster, straightening effect, no damage to hair, and straight permanent holding power. Was evaluated. (%) 1) Stearyltrimethylammonium chloride 1.5 2) Distearyldimethylammonium chloride 0.5 3) Behenyl alcohol 8.0 4) Aqueous polymer silicone emulsion (* 1) (Silicon BY22-029, Dow Corning Toray) 2.0 5) POE (7EO) cetyl ether 2.0 6) POE (25EO) stearyl ether 2.0 7) white petrolatum 2.0 8) paraffin 1.09) Monoethanolamine thioglycolate 6.0 10) Monoethanolamine 1.5 11) Disodium edetate 0.1 12) Hydrolyzed wheat protein 1.0 13) Aloe extract 0.1 14) Fragrance 0.3 15) Purified water residue (* 1) High molecular silicone (R ₁ = methyl group, R ₂ = methyl group, n = 210 A polymer silicone emulsion containing 50% of (0) and emulsified with a nonionic surfactant.

(Preparation method) Components 1 to 3, 14 and 5 to 8
After heating at 0 ° C., mixing and emulsifying component 15 with that heated to 80 ° C., and cooling to 30 ° C., components 4, 9
To 13 and uniformly mixed with a homomixer.
A 5000 mPa · s cream-like hair straightening agent was obtained.

Example 11 A hair straightener having the following composition was prepared, and the feel of the hair bundle after finishing was evaluated for smoothness, suppleness, luster, straightening effect, no damage to hair, and straight permanent holding power. Was evaluated. (%) 1) Cetyltrimethylammonium bromide 2.0 2) Alkyltrimethylammonium chloride 0.5 3) Cetanol 3.0 4) Oleyl alcohol 0.5 5) Octyldodecanol 0.5 6) Polymer silicone aqueous emulsion (* 2) (Silicon XS65-7116, manufactured by GE Toshiba Silicones) 2.0 7) POE (20EO) cetyl ether 0.5 8) POE (40EO) stearyl ether 0.59) Fluid Paraffin 0.5 10) Paraffin 3.0 11) Isopropyl myristate 1.0 12) Hardened oil 2.0 13) Dipropylene glycol 2.0 14) Monoethanolamine thioglycolate 5.0 15) Monoethanolamine 2 .5 16) ammonium bicarbonate 2.0 17) dithioglycolic acid 18) Disodium edetate 0.1 19) Hydrolyzed silk solution 1.0 20) Hydrolyzed collagen solution 1.0 21) Legal amount of pigment 22) Fragrance 0.5 23) Purified water residue ( * 2) A polymer silicone emulsion containing 30% of a polymer silicone (R ₁ = methyl group, R ₂ = methyl group, n = 2400) and emulsified with a nonionic surfactant.

(Preparation method) Components 1 to 5, 7 to 13 and 22 were heated at 80 ° C, and components 22 to 23 were mixed with those heated to 80 ° C, emulsified, and cooled to 30 ° C. Thereafter, the components 6, 14 to 20 were added and uniformly mixed with a homomixer to obtain a milky hair straightening agent having a viscosity of 8000 mPa · s.

Each of the hair straighteners obtained in Examples 10 to 11 has excellent effects of high smoothness, suppleness, luster, straightening effect, no damage to hair and straight perm holding power. I was

[0048]

The straightening agent of the present invention can impart smoothness, suppleness, and luster to hair in straight perm, and furthermore, the straight perm effect is not hindered and the straight perm effect is maintained. And a remarkable effect of preventing hair damage such as cut hair due to perm treatment.

Claims (2)

[Claims] 1. A hair straightening agent comprising a quaternary ammonium salt, a higher alcohol and an aqueous emulsion of a high molecular silicone represented by the following general formula (I). Embedded image (In the above formula, R ₁ may represent a methyl group or a part thereof may represent a phenyl group, R ₂ represents a methyl group or a hydroxyl group, and n represents an integer of 500 to 3,000.) 2. The method according to claim 1, wherein the viscosity of the hair straightening agent is adjusted to a range of 1,000 to 50,000 mPa · s at 20 ° C., and the hair straightening agent is in the form of an emulsion or cream. Hair straightener.